I had a bluefin so I know the procedure.
This taken from the bluefin website.
<h3 style="margin: 0px; padding: 12px 0px 0px; font-size: 14px; line-height: 16px; font-family: Arial, Helvetica, "Sans Serif"; : rgb5, 6, 7;"><a name="#more_than_one">Can I use my Bluefin on more than one vehicle at a time?</a></h3>The Bluefin is designed to become tied to one vehicle and, therefore, cannot be used on two vehicles at the same time. It is, however, possible to use the Bluefin to program one vehicle wh the Superchip modification, then pay for the unit to be reset, at a reduced price from the RRP of a new unit, for use on a subsequent vehicle. This would, of course, mean that it could not be used again on the original vehicleas it will be tied to the current vehicle.
Edited by: Grumps